Improvement in hydraulic elevators



H; SNOWDE.N. Hydrmflio-Elevator.

No. 216,465. Patented June 10,1819..

ll/illnesses Inventor:

N-PEYERS. PHOTO-UTHOGRAPHER, WASHINGTON. D C.

UNITED STATES PATENT OEEIoE.

HENRY SNOWDEN, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN HYDRAULIC ELEVATORS.

Specification forming part of Letters Patent No. 216,465, dated J nne 10, 1879; application filed April 9, 1879.

To all whom it may concern:

ors, and will first be described in connection with the accompanying drawings, and then pointed out in the claims.

Figure I is a side elevation. view of engine.

This invention is an improvement applicable to hydraulic engines of the horizontal description, and relates to the two piston-rods a, attached to one pistonhead and to a transverse shaft, b, forming a cross-head, on which revolve the sheaves c. The ends of the shaft or cross-head are provided with frictiourollers d, which traverse the slides or ways 6. These latter, at their extremity, are curved upward or otherwise provided with stops f, to which a rod g, is connected, and is secured by its opposite end 'to the head h of cylinder. The stop end f prevents the piston with the cross-head and sheaves from escaping from cylinder in the event of rope breaking, or if the water, by accident, is not shut off.

Fig. II is a plan It will be seen one end of the ways 0 is secured directly to the cylinder, and the other end is, by means of the rod g, also secured to the cylinder, thus connecting the parts in a very substantial manner.

A novel feature of the upright guides and the brake mechanism here shown is described and claimed in another application for a pat ent.

Having described my invention, I claim and desire to secure by United States Letters Patent- 1. In a hydraulic engine of the horizontal description, the improved cross-head consisting of the combination of the two piston-rods HENRY SNOWDEN.

Witnesses:

R. Hrrnnvs, JOHN W. TAYLOR. 

